Azure Notification Hubs vs. Knock

Azure Notification Hubs is a massively scalable mobile push notification engine for quickly sending millions of notifications to iOS, Android, Windows, or Kindle devices, working with APNs (Apple Push Notification service), GCM (Google Cloud Messaging), WNS (Windows Push Notification Service), MPNS (Microsoft Push Notification Service), and more.

Knock is infrastructure for sending product and customer messaging. Ship cross-channel product notifications and lifecycle messaging that drives engagement, growth, and retention. Knock has everything you need to power notifications for your product, including: - A powerful workflow engine to automate and manage your entire cross-channel motion, from in-product messaging to email and push notifications. - Branded, in-product messaging components, including embeddable inboxes, feeds, and lifecycle messages. - Broadcasts make it easy to send effective, one-time messages to custom audiences.